Home / 210,870.36-291,004.74-115,385.40

Finding the Fourth Proportional to 210,870.36, 291,004.74 and 115,385.40

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Solution

The fourth proportional to 210,870.36, 291,004.74 and 115,385.40 is: 159,233.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,870.36 : 291,004.74 = 115,385.40 : x
  2. Step 2: Convert to fraction form
    210,870.36/291,004.74 = 115,385.40/x
  3. Step 3: Cross multiply
    210,870.36x = 291,004.74 × 115,385.40
  4. Step 4: Simplify right side
    210,870.36x = 33,577,698,326.80
  5. Step 5: Solve for x
    x = 33,577,698,326.80/210,870.36
  6. Step 6: Final answer
    x = 159,233.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.